Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
  [POWERPC] Add memchr() to the bootwrapper
  [POWERPC] Implement logging of unhandled signals
  [POWERPC] Add legacy serial support for OPB with flattened device tree
  [POWERPC] Use 1TB segments
  [POWERPC] XilinxFB: Allow fixed framebuffer base address
  [POWERPC] XilinxFB: Add support for custom screen resolution
  [POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
  [POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
  [POWERPC] 4xx: Kilauea defconfig file
  [POWERPC] 4xx: Kilauea DTS
  [POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
  [POWERPC] 4xx: Add AMCC 405EX support to cputable.c
  [POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
  [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
  [POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
  [POWERPC] 85xx: Killed <asm/mpc85xx.h>
  [POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
  [POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
  [POWERPC] mpc8272ads: Remove muram from the CPM reg property.
  [POWERPC] Make clockevents work on PPC601 processors
  ...

Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.

2 files changed, 278 insertions, 123 deletions

diff --git a/drivers/video/platinumfb.c b/drivers/video/platinumfb.c
index 8503e733a172..cbe71a5338d0 100644
--- a/drivers/video/platinumfb.c
+++ b/drivers/video/platinumfb.c
@@ -17,6 +17,8 @@
  *  more details.
  */
 
+#undef DEBUG
+
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -535,33 +537,35 @@ static int __devinit platinumfb_probe(struct of_device* odev,
 	volatile __u8		*fbuffer;
 	int			bank0, bank1, bank2, bank3, rc;
 
-	printk(KERN_INFO "platinumfb: Found Apple Platinum video hardware\n");
+	dev_info(&odev->dev, "Found Apple Platinum video hardware\n");
 
 	info = framebuffer_alloc(sizeof(*pinfo), &odev->dev);
-	if (info == NULL)
+	if (info == NULL) {
+		dev_err(&odev->dev, "Failed to allocate fbdev !\n");
 		return -ENOMEM;
+	}
 	pinfo = info->par;
 
 	if (of_address_to_resource(dp, 0, &pinfo->rsrc_reg) ||
 	    of_address_to_resource(dp, 1, &pinfo->rsrc_fb)) {
-		printk(KERN_ERR "platinumfb: Can't get resources\n");
-		framebuffer_release(info);
-		return -ENXIO;
-	}
-	if (!request_mem_region(pinfo->rsrc_reg.start,
-				pinfo->rsrc_reg.start -
-				pinfo->rsrc_reg.end + 1,
-				"platinumfb registers")) {
+		dev_err(&odev->dev, "Can't get resources\n");
 		framebuffer_release(info);
 		return -ENXIO;
 	}
+	dev_dbg(&odev->dev, " registers  : 0x%llx...0x%llx\n",
+		(unsigned long long)pinfo->rsrc_reg.start,
+		(unsigned long long)pinfo->rsrc_reg.end);
+	dev_dbg(&odev->dev, " framebuffer: 0x%llx...0x%llx\n",
+		(unsigned long long)pinfo->rsrc_fb.start,
+		(unsigned long long)pinfo->rsrc_fb.end);
+
+	/* Do not try to request register space, they overlap with the
+	 * northbridge and that can fail. Only request framebuffer
+	 */
 	if (!request_mem_region(pinfo->rsrc_fb.start,
-				pinfo->rsrc_fb.start
-				- pinfo->rsrc_fb.end + 1,
+				pinfo->rsrc_fb.end - pinfo->rsrc_fb.start + 1,
 				"platinumfb framebuffer")) {
-		release_mem_region(pinfo->rsrc_reg.start,
-				   pinfo->rsrc_reg.end -
-				   pinfo->rsrc_reg.start + 1);
+		printk(KERN_ERR "platinumfb: Can't request framebuffer !\n");
 		framebuffer_release(info);
 		return -ENXIO;
 	}
@@ -600,7 +604,8 @@ static int __devinit platinumfb_probe(struct of_device* odev,
 	bank2 = fbuffer[0x200000] == 0x56;
 	bank3 = fbuffer[0x300000] == 0x78;
 	pinfo->total_vram = (bank0 + bank1 + bank2 + bank3) * 0x100000;
-	printk(KERN_INFO "platinumfb: Total VRAM = %dMB (%d%d%d%d)\n", (int) (pinfo->total_vram / 1024 / 1024),
+	printk(KERN_INFO "platinumfb: Total VRAM = %dMB (%d%d%d%d)\n",
+	       (unsigned int) (pinfo->total_vram / 1024 / 1024),
 	       bank3, bank2, bank1, bank0);
 
 	/*
@@ -644,16 +649,15 @@ static int __devexit platinumfb_remove(struct of_device* odev)
         unregister_framebuffer (info);
 	
 	/* Unmap frame buffer and registers */
+	iounmap(pinfo->frame_buffer);
+	iounmap(pinfo->platinum_regs);
+	iounmap(pinfo->cmap_regs);
+
 	release_mem_region(pinfo->rsrc_fb.start,
 			   pinfo->rsrc_fb.end -
 			   pinfo->rsrc_fb.start + 1);
-	release_mem_region(pinfo->rsrc_reg.start,
-			   pinfo->rsrc_reg.end -
-			   pinfo->rsrc_reg.start + 1);
-	iounmap(pinfo->frame_buffer);
-	iounmap(pinfo->platinum_regs);
+
 	release_mem_region(pinfo->cmap_regs_phys, 0x1000);
-	iounmap(pinfo->cmap_regs);
 
 	framebuffer_release(info);
 
diff --git a/drivers/video/xilinxfb.c b/drivers/video/xilinxfb.c
index 6ef9733a18d4..6ef99b2d13ca 100644
--- a/drivers/video/xilinxfb.c
+++ b/drivers/video/xilinxfb.c
@@ -6,9 +6,12 @@
  * Author: MontaVista Software, Inc.
  *         source@mvista.com
  *
- * 2002-2007 (c) MontaVista Software, Inc.  This file is licensed under the
- * terms of the GNU General Public License version 2.  This program is licensed
- * "as is" without any warranty of any kind, whether express or implied.
+ * 2002-2007 (c) MontaVista Software, Inc.
+ * 2007 (c) Secret Lab Technologies, Ltd.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
  */
 
 /*
@@ -18,6 +21,7 @@
  * Geert Uytterhoeven.
  */
 
+#include <linux/device.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/version.h>
@@ -28,9 +32,12 @@
 #include <linux/init.h>
 #include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
-
+#if defined(CONFIG_OF)
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#endif
 #include <asm/io.h>
-#include <syslib/virtex_devices.h>
+#include <linux/xilinxfb.h>
 
 #define DRIVER_NAME		"xilinxfb"
 #define DRIVER_DESCRIPTION	"Xilinx TFT LCD frame buffer driver"
@@ -63,12 +70,6 @@
  */
 #define BYTES_PER_PIXEL	4
 #define BITS_PER_PIXEL	(BYTES_PER_PIXEL * 8)
-#define XRES		640
-#define YRES		480
-#define XRES_VIRTUAL	1024
-#define YRES_VIRTUAL	YRES
-#define LINE_LENGTH	(XRES_VIRTUAL * BYTES_PER_PIXEL)
-#define FB_SIZE		(YRES_VIRTUAL * LINE_LENGTH)
 
 #define RED_SHIFT	16
 #define GREEN_SHIFT	8
@@ -77,23 +78,26 @@
 #define PALETTE_ENTRIES_NO	16	/* passed to fb_alloc_cmap() */
 
 /*
+ * Default xilinxfb configuration
+ */
+static struct xilinxfb_platform_data xilinx_fb_default_pdata = {
+	.xres = 640,
+	.yres = 480,
+	.xvirt = 1024,
+	.yvirt = 480;
+};
+
+/*
  * Here are the default fb_fix_screeninfo and fb_var_screeninfo structures
  */
 static struct fb_fix_screeninfo xilinx_fb_fix = {
 	.id =		"Xilinx",
 	.type =		FB_TYPE_PACKED_PIXELS,
 	.visual =	FB_VISUAL_TRUECOLOR,
-	.smem_len =	FB_SIZE,
-	.line_length =	LINE_LENGTH,
 	.accel =	FB_ACCEL_NONE
 };
 
 static struct fb_var_screeninfo xilinx_fb_var = {
-	.xres =			XRES,
-	.yres =			YRES,
-	.xres_virtual =		XRES_VIRTUAL,
-	.yres_virtual =		YRES_VIRTUAL,
-
 	.bits_per_pixel =	BITS_PER_PIXEL,
 
 	.red =		{ RED_SHIFT, 8, 0 },
@@ -111,8 +115,9 @@ struct xilinxfb_drvdata {
 	u32		regs_phys;	/* phys. address of the control registers */
 	u32 __iomem	*regs;		/* virt. address of the control registers */
 
-	unsigned char __iomem	*fb_virt;	/* virt. address of the frame buffer */
+	void		*fb_virt;	/* virt. address of the frame buffer */
 	dma_addr_t	fb_phys;	/* phys. address of the frame buffer */
+	int		fb_alloced;	/* Flag, was the fb memory alloced? */
 
 	u32		reg_ctrl_default;
 
@@ -195,130 +200,136 @@ static struct fb_ops xilinxfb_ops =
 	.fb_imageblit		= cfb_imageblit,
 };
 
-/* === The device driver === */
+/* ---------------------------------------------------------------------
+ * Bus independent setup/teardown
+ */
 
-static int
-xilinxfb_drv_probe(struct device *dev)
+static int xilinxfb_assign(struct device *dev, unsigned long physaddr,
+			   struct xilinxfb_platform_data *pdata)
 {
-	struct platform_device *pdev;
-	struct xilinxfb_platform_data *pdata;
 	struct xilinxfb_drvdata *drvdata;
-	struct resource *regs_res;
-	int retval;
-
-	if (!dev)
-		return -EINVAL;
-
-	pdev = to_platform_device(dev);
-	pdata = pdev->dev.platform_data;
+	int rc;
+	int fbsize = pdata->xvirt * pdata->yvirt * BYTES_PER_PIXEL;
 
+	/* Allocate the driver data region */
 	drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
 	if (!drvdata) {
-		printk(KERN_ERR "Couldn't allocate device private record\n");
+		dev_err(dev, "Couldn't allocate device private record\n");
 		return -ENOMEM;
 	}
 	dev_set_drvdata(dev, drvdata);
 
 	/* Map the control registers in */
-	regs_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-	if (!regs_res || (regs_res->end - regs_res->start + 1 < 8)) {
-		printk(KERN_ERR "Couldn't get registers resource\n");
-		retval = -EFAULT;
-		goto failed1;
+	if (!request_mem_region(physaddr, 8, DRIVER_NAME)) {
+		dev_err(dev, "Couldn't lock memory region at 0x%08lX\n",
+			physaddr);
+		rc = -ENODEV;
+		goto err_region;
 	}
-
-	if (!request_mem_region(regs_res->start, 8, DRIVER_NAME)) {
-		printk(KERN_ERR
-		       "Couldn't lock memory region at 0x%08X\n",
-		       regs_res->start);
-		retval = -EBUSY;
-		goto failed1;
+	drvdata->regs_phys = physaddr;
+	drvdata->regs = ioremap(physaddr, 8);
+	if (!drvdata->regs) {
+		dev_err(dev, "Couldn't lock memory region at 0x%08lX\n",
+			physaddr);
+		rc = -ENODEV;
+		goto err_map;
 	}
-	drvdata->regs = (u32 __iomem*) ioremap(regs_res->start, 8);
-	drvdata->regs_phys = regs_res->start;
 
 	/* Allocate the framebuffer memory */
-	drvdata->fb_virt = dma_alloc_coherent(dev, PAGE_ALIGN(FB_SIZE),
-				&drvdata->fb_phys, GFP_KERNEL);
+	if (pdata->fb_phys) {
+		drvdata->fb_phys = pdata->fb_phys;
+		drvdata->fb_virt = ioremap(pdata->fb_phys, fbsize);
+	} else {
+		drvdata->fb_alloced = 1;
+		drvdata->fb_virt = dma_alloc_coherent(dev, PAGE_ALIGN(fbsize),
+					&drvdata->fb_phys, GFP_KERNEL);
+	}
+
 	if (!drvdata->fb_virt) {
-		printk(KERN_ERR "Could not allocate frame buffer memory\n");
-		retval = -ENOMEM;
-		goto failed2;
+		dev_err(dev, "Could not allocate frame buffer memory\n");
+		rc = -ENOMEM;
+		goto err_fbmem;
 	}
 
 	/* Clear (turn to black) the framebuffer */
-	memset_io((void *) drvdata->fb_virt, 0, FB_SIZE);
+	memset_io((void __iomem *)drvdata->fb_virt, 0, fbsize);
 
 	/* Tell the hardware where the frame buffer is */
 	xilinx_fb_out_be32(drvdata, REG_FB_ADDR, drvdata->fb_phys);
 
 	/* Turn on the display */
 	drvdata->reg_ctrl_default = REG_CTRL_ENABLE;
-	if (pdata && pdata->rotate_screen)
+	if (pdata->rotate_screen)
 		drvdata->reg_ctrl_default |= REG_CTRL_ROTATE;
 	xilinx_fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default);
 
 	/* Fill struct fb_info */
 	drvdata->info.device = dev;
-	drvdata->info.screen_base = drvdata->fb_virt;
+	drvdata->info.screen_base = (void __iomem *)drvdata->fb_virt;
 	drvdata->info.fbops = &xilinxfb_ops;
 	drvdata->info.fix = xilinx_fb_fix;
 	drvdata->info.fix.smem_start = drvdata->fb_phys;
-	drvdata->info.pseudo_palette = drvdata->pseudo_palette;
-
-	if (fb_alloc_cmap(&drvdata->info.cmap, PALETTE_ENTRIES_NO, 0) < 0) {
-		printk(KERN_ERR "Fail to allocate colormap (%d entries)\n",
-			PALETTE_ENTRIES_NO);
-		retval = -EFAULT;
-		goto failed3;
-	}
+	drvdata->info.fix.smem_len = fbsize;
+	drvdata->info.fix.line_length = pdata->xvirt * BYTES_PER_PIXEL;
 
+	drvdata->info.pseudo_palette = drvdata->pseudo_palette;
 	drvdata->info.flags = FBINFO_DEFAULT;
-	if (pdata) {
-		xilinx_fb_var.height = pdata->screen_height_mm;
-		xilinx_fb_var.width = pdata->screen_width_mm;
-	}
 	drvdata->info.var = xilinx_fb_var;
+	drvdata->info.var.height = pdata->screen_height_mm;
+	drvdata->info.var.width = pdata->screen_width_mm;
+	drvdata->info.var.xres = pdata->xres;
+	drvdata->info.var.yres = pdata->yres;
+	drvdata->info.var.xres_virtual = pdata->xvirt;
+	drvdata->info.var.yres_virtual = pdata->yvirt;
+
+	/* Allocate a colour map */
+	rc = fb_alloc_cmap(&drvdata->info.cmap, PALETTE_ENTRIES_NO, 0);
+	if (rc) {
+		dev_err(dev, "Fail to allocate colormap (%d entries)\n",
+			PALETTE_ENTRIES_NO);
+		goto err_cmap;
+	}
 
 	/* Register new frame buffer */
-	if (register_framebuffer(&drvdata->info) < 0) {
-		printk(KERN_ERR "Could not register frame buffer\n");
-		retval = -EINVAL;
-		goto failed4;
+	rc = register_framebuffer(&drvdata->info);
+	if (rc) {
+		dev_err(dev, "Could not register frame buffer\n");
+		goto err_regfb;
 	}
 
+	/* Put a banner in the log (for DEBUG) */
+	dev_dbg(dev, "regs: phys=%lx, virt=%p\n", physaddr, drvdata->regs);
+	dev_dbg(dev, "fb: phys=%p, virt=%p, size=%x\n",
+		(void*)drvdata->fb_phys, drvdata->fb_virt, fbsize);
+
 	return 0;	/* success */
 
-failed4:
+err_regfb:
 	fb_dealloc_cmap(&drvdata->info.cmap);
 
-failed3:
-	dma_free_coherent(dev, PAGE_ALIGN(FB_SIZE), drvdata->fb_virt,
-		drvdata->fb_phys);
-
+err_cmap:
+	if (drvdata->fb_alloced)
+		dma_free_coherent(dev, PAGE_ALIGN(fbsize), drvdata->fb_virt,
+			drvdata->fb_phys);
 	/* Turn off the display */
 	xilinx_fb_out_be32(drvdata, REG_CTRL, 0);
+
+err_fbmem:
 	iounmap(drvdata->regs);
 
-failed2:
-	release_mem_region(regs_res->start, 8);
+err_map:
+	release_mem_region(physaddr, 8);
 
-failed1:
+err_region:
 	kfree(drvdata);
 	dev_set_drvdata(dev, NULL);
 
-	return retval;
+	return rc;
 }
 
-static int
-xilinxfb_drv_remove(struct device *dev)
+static int xilinxfb_release(struct device *dev)
 {
-	struct xilinxfb_drvdata *drvdata;
-
-	if (!dev)
-		return -ENODEV;
-
-	drvdata = (struct xilinxfb_drvdata *) dev_get_drvdata(dev);
+	struct xilinxfb_drvdata *drvdata = dev_get_drvdata(dev);
 
 #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
 	xilinx_fb_blank(VESA_POWERDOWN, &drvdata->info);
@@ -328,8 +339,9 @@ xilinxfb_drv_remove(struct device *dev)
 
 	fb_dealloc_cmap(&drvdata->info.cmap);
 
-	dma_free_coherent(dev, PAGE_ALIGN(FB_SIZE), drvdata->fb_virt,
-		drvdata->fb_phys);
+	if (drvdata->fb_alloced)
+		dma_free_coherent(dev, PAGE_ALIGN(drvdata->info.fix.smem_len),
+				  drvdata->fb_virt, drvdata->fb_phys);
 
 	/* Turn off the display */
 	xilinx_fb_out_be32(drvdata, REG_CTRL, 0);
@@ -343,29 +355,168 @@ xilinxfb_drv_remove(struct device *dev)
 	return 0;
 }
 
+/* ---------------------------------------------------------------------
+ * Platform bus binding
+ */
+
+static int
+xilinxfb_platform_probe(struct platform_device *pdev)
+{
+	struct xilinxfb_platform_data *pdata;
+	struct resource *res;
 
-static struct device_driver xilinxfb_driver = {
-	.name		= DRIVER_NAME,
-	.bus		= &platform_bus_type,
+	/* Find the registers address */
+	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "Couldn't get registers resource\n");
+		return -ENODEV;
+	}
 
-	.probe		= xilinxfb_drv_probe,
-	.remove		= xilinxfb_drv_remove
+	/* If a pdata structure is provided, then extract the parameters */
+	pdata = &xilinx_fb_default_pdata;
+	if (pdev->dev.platform_data) {
+		pdata = pdev->dev.platform_data;
+		if (!pdata->xres)
+			pdata->xres = xilinx_fb_default_pdata.xres;
+		if (!pdata->yres)
+			pdata->yres = xilinx_fb_default_pdata.yres;
+		if (!pdata->xvirt)
+			pdata->xvirt = xilinx_fb_default_pdata.xvirt;
+		if (!pdata->yvirt)
+			pdata->yvirt = xilinx_fb_default_pdata.yvirt;
+	}
+
+	return xilinxfb_assign(&pdev->dev, res->start, pdata);
+}
+
+static int
+xilinxfb_platform_remove(struct platform_device *pdev)
+{
+	return xilinxfb_release(&pdev->dev);
+}
+
+
+static struct platform_driver xilinxfb_platform_driver = {
+	.probe		= xilinxfb_platform_probe,
+	.remove		= xilinxfb_platform_remove,
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = DRIVER_NAME,
+	},
+};
+
+/* ---------------------------------------------------------------------
+ * OF bus binding
+ */
+
+#if defined(CONFIG_OF)
+static int __devinit
+xilinxfb_of_probe(struct of_device *op, const struct of_device_id *match)
+{
+	struct resource res;
+	const u32 *prop;
+	struct xilinxfb_platform_data pdata;
+	int size, rc;
+
+	/* Copy with the default pdata (not a ptr reference!) */
+	pdata = xilinx_fb_default_pdata;
+
+	dev_dbg(&op->dev, "xilinxfb_of_probe(%p, %p)\n", op, match);
+
+	rc = of_address_to_resource(op->node, 0, &res);
+	if (rc) {
+		dev_err(&op->dev, "invalid address\n");
+		return rc;
+	}
+
+	prop = of_get_property(op->node, "phys-size", &size);
+	if ((prop) && (size >= sizeof(u32)*2)) {
+		pdata.screen_width_mm = prop[0];
+		pdata.screen_height_mm = prop[1];
+	}
+
+	prop = of_get_property(op->node, "resolution", &size);
+	if ((prop) && (size >= sizeof(u32)*2)) {
+		pdata.xres = prop[0];
+		pdata.yres = prop[1];
+	}
+
+	prop = of_get_property(op->node, "virtual-resolution", &size);
+	if ((prop) && (size >= sizeof(u32)*2)) {
+		pdata.xvirt = prop[0];
+		pdata.yvirt = prop[1];
+	}
+
+	if (of_find_property(op->node, "rotate-display", NULL))
+		pdata.rotate_screen = 1;
+
+	return xilinxfb_assign(&op->dev, res.start, &pdata);
+}
+
+static int __devexit xilinxfb_of_remove(struct of_device *op)
+{
+	return xilinxfb_release(&op->dev);
+}
+
+/* Match table for of_platform binding */
+static struct of_device_id __devinit xilinxfb_of_match[] = {
+	{ .compatible = "xilinx,ml300-fb", },
+	{},
 };
+MODULE_DEVICE_TABLE(of, xilinxfb_of_match);
+
+static struct of_platform_driver xilinxfb_of_driver = {
+	.owner = THIS_MODULE,
+	.name = DRIVER_NAME,
+	.match_table = xilinxfb_of_match,
+	.probe = xilinxfb_of_probe,
+	.remove = __devexit_p(xilinxfb_of_remove),
+	.driver = {
+		.name = DRIVER_NAME,
+	},
+};
+
+/* Registration helpers to keep the number of #ifdefs to a minimum */
+static inline int __init xilinxfb_of_register(void)
+{
+	pr_debug("xilinxfb: calling of_register_platform_driver()\n");
+	return of_register_platform_driver(&xilinxfb_of_driver);
+}
+
+static inline void __exit xilinxfb_of_unregister(void)
+{
+	of_unregister_platform_driver(&xilinxfb_of_driver);
+}
+#else /* CONFIG_OF */
+/* CONFIG_OF not enabled; do nothing helpers */
+static inline int __init xilinxfb_of_register(void) { return 0; }
+static inline void __exit xilinxfb_of_unregister(void) { }
+#endif /* CONFIG_OF */
+
+/* ---------------------------------------------------------------------
+ * Module setup and teardown
+ */
 
 static int __init
 xilinxfb_init(void)
 {
-	/*
-	 * No kernel boot options used,
-	 * so we just need to register the driver
-	 */
-	return driver_register(&xilinxfb_driver);
+	int rc;
+	rc = xilinxfb_of_register();
+	if (rc)
+		return rc;
+
+	rc = platform_driver_register(&xilinxfb_platform_driver);
+	if (rc)
+		xilinxfb_of_unregister();
+
+	return rc;
 }
 
 static void __exit
 xilinxfb_cleanup(void)
 {
-	driver_unregister(&xilinxfb_driver);
+	platform_driver_unregister(&xilinxfb_platform_driver);
+	xilinxfb_of_unregister();
 }
 
 module_init(xilinxfb_init);